Find the surface area explain how you got your answer​

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474

Step-by-step explanation:

For these you have to do base × height for each face separately then add them up so. for the sides it would be 15 × 6 = 90 sense there matching there will be two 90's we add in the end for the front and back it would be 15 x 7 = 105 so there will be 2 105's we have to add in the end and for the top and bottom it will be 7 × 6 = 42 so now we have 2 42's we have to add so now we add them all up! 90 + 90 + 105 + 105 + 42 + 42 =474 So 474 is the total surface area! Hope this helps!

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step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4